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PC Freeze problem (lots of info)
Hey there. I've edited this opening post to a list in stead of a wall-of-text so it is easier for everyone to read.
The problem: Random freezes/reboots. More info here:
- The PC just freezes randomly in normal use, nothing triggers it, it can happen in 5mins or 50hours. The longest period it was without freezing was over a month. Definition of normal use: can happen in idle, can happen when playing, can happen when browsing the internet etc. you get the idea.
- The freeze is the basic deadlock, mouse, keyboard, everything stops functioning. Picture stays on, all the components and their cooling stay on, sound stays on sometimes. Solution = reset button.
- The freeze has happened in Windows (normal), the freeze has happened while loading windows, the freeze has happened in BIOS/POST, but HAS NOT happened in safemode, ever.
- Sometimes it doesn't freeze immediately, but the mouse starts stuttering when you try to move it (like lagging) for like 5 seconds and then the freeze happens.
- Sometimes the PC reboots itself after being frozen for like 10-30 seconds, no BSoD, just reboot. There are bugcheck errors saved in MEMORY.DMP when the PC has rebooted itself.
What I've already done while trying to solve the problem:
- Updated BIOS, OS and drivers.
- Run Memtest86 several times overnight (7-10 passes) with different slot combinations without any errors.
- Run Prime95 for 20hours to see if CPU or RAM overheats or gets errors, there were no problems.
- Tested PSU with a tool made for the purpose (PSU tester), it worked perfectly.
- Run Furmark for various amounts of time to see if the GPU overheats (or gets graphical errors) - there were no problems.
- Run CHKDSK several times to see if there are errors in my HDD, there were none.
- Observing temperatures in case of sudden changes and peaks - temperatures are always within safe numbers.
- I've also unplugged everything from the mobo, and plugged them back in case of a bad connection somewhere - didn't solve the problem.
- I've run virus scanner several times, there were never any infections. Using Avast by the way.
Known "issues", or if not issues, things to mention:
- I have RAMs with very, VERY large heat spreaders, thus I can't fit one of them to the first RAM slot of the motherboard, because CPU cooler is blocking it, I've only tested slots 2-4, first slot is always empty.
- The RAMs are running @1333MHz clocks, even though they are 1600MHz RAMs, but it is common with my CPU that the system underclocks the RAMs to 1333MHz, because it is the highest RAM clock my CPU supports by default, AMD Phenom II X4 965BE is the CPU in question.
- Few times when the PC rebooted itself during a freeze, the red DRAM LED has lit for 2-5 seconds.
- I don't know how silent new "modern day" HDDs should be, but my Samsung Spinpoint F3 is making weird sounds sometimes, and it's only 3 months old.
That's all I can come up with for now. Thanks in advance for any input.
Last edited by Stupified; 04 Nov 2010 at 07:00. Reason: stuff